What does the AT4 mean for GMC?

The GMC Sierra has been a popular pickup truck for the brand for over two decades. Known for its versatility and four-wheel-drive capability, Sierra owners have enjoyed driving it for work and play.

In 2019, GMC introduced the AT4 trim. AT4 stands for all-terrain four-wheel drive, but this model is more than a truck with four-wheel drive. GMC developed the AT4 to appeal to off-road adventurers, equipping it with more durable equipment and increased capabilities. Thanks to the Sierra AT4’s success, GMC includes an AT4 trim on most of its vehicles. Read on as our Meadowland GMC team in Meadowland, New York, highlights the GMC Sierra 1500 AT4 trim’s unique features.

2024 GMC Sierra 1500 AT4 Engine Options

The 2023 Sierra 1500 came standard with a 2.7-liter turbo engine, or you could opt for the 5.3-liter EcoTec V-8 or a 3.0-liter turbo-diesel engine. The 2.7-liter engine is no longer available in the GMC Sierra.

Sierra 1500 AT4 models have a Duramax 3.0-liter turbo-diesel engine or an optional 6.2-liter gas V-8 engine. GMC has enhanced the turbo-diesel engine with new steel pistons and a revised combustion bowl.

It has also tuned the turbo compressor, added new fuel injectors, and improved the engine’s temperature control systems. This engine gets a best-in-class 305 horsepower and 495 lb-ft of torque. It also has an 8,900-pound towing capacity.

Opting for the 6.2-liter V-8 gas engine with Dynamic Fuel Management technology provides 420 horsepower and 460 lb-ft of torque. And you can tow up to 9,000 pounds with the proper equipment.

What Makes the 2024 GMC Sierra 1500 AT4 Different?

The GMC Sierra AT4 features a rugged style, off-road equipment, and a technology suite with intuitive, advanced features to tackle the harshest terrain. The AT4 has a factory-installed 2-inch suspension lift that fits 33-inch Goodyear off-road mud-terrain-rated Wrangler tires.

Other upgrades include off-road-tuned Rancho monotube shock absorbers, a two-speed AutoTrac transfer case, an automatic locking rear differential, red vertical recovery hooks, and skid plates. For enhanced durability, you can upgrade to a Carbon Pro composite bed.

The AT4 is as comfortable on the inside as it is capable on the outside. Signature Jet Black with Kalahari perforated leather upholstery features AT4 embroidery and accents. Heated and ventilated front seats and a heated leather-wrapped steering wheel add premium comfort. It also features premium front and rear floor liners with removable carpet inserts for easy cleanup. Convenient storage in the rear seatback and underneath the back seat keeps your gear safe from prying eyes.

All the in-vehicle technology runs through a 13.4-inch touchscreen with wireless Android Auto and Apple CarPlay pre-installed. Other technological features include a 12.3-inch digital driver information screen, an available multicolor head-up display, and a standard Bose premium sound system with a Richbass woofer.

2024 GMC Sierra AT4X

GMC introduced the Sierra 1500 AT4X in 2023, taking the off-road trim to another level. In 2024, this Sierra model features Multimatic DSSV dampers for a smoother ride. It also has front and rear electronic locking differentials you won’t find on any other truck in its class.

GMC asked American Expedition Vehicles (AEV) to provide additional off-road equipment for the AT4X. These models have an AEV-stamped steel front bumper with front winch capability and an AEV-stamped boron steel front approach skid plate for added protection.

Trim-exclusive 18-inch painted aluminum wheels with dark-painted pockets wrapped in 33-inch Goodyear Wrangler Territory mud-terrain tires combine style with exceptional off-road traction.

Inside the AT4X, heated and ventilated 16-way power front seats feature a massage function. The Obsidian Rush interior has full-grain leather upholstery with technical-grain leather accents. Authentic Vanta ash wood trim adds a sophisticated style.

The AT4 takes off-road adventures to new levels of enjoyment. Its factory lift adds significant height to clear more obstacles, while the underbody skid plates protect the engine and drivetrain from damage as you conquer the rough terrain.

Getting stuck in the mud is nearly impossible with the 33-inch mud-terrain tires, especially when it has the 3.0-liter turbo-diesel’s 495 lb-ft of torque. But for serious fun, the 6.2-liter gas-powered V-8 offers thrilling drives.

GMC thought of everything with the selectable drive modes that tune your AT4’s throttle, suspension, and steering systems to suit your driving needs. The standard Touring mode works well for your everyday commute, while a Sport mode optimizes powertrain calibrations to make driving more exciting.

When you leave the pavement behind, the Terrain mode gets your AT4 moving with confidence. An Off-Road mode dials in your AT4 for precise traction and control when the surfaces get challenging, and the Tow/Haul mode makes taking your ATVs, jet skis, or boat along on your next adventure easy. The AT4 also comes standard with hill descent control. This anti-lock braking system helps you stay in control on steep declines.

GMC’s AT4X takes all this to the next level with an off-road-tuned chassis. Uniquely tuned springs support increased front and rear suspension, while multimedia DSSV dampers feature three separate spool valves that control damping and three connected chambers for fluid flow.

The front and rear electronic locking differentials let you lock the front and rear axles with the push of a button. In the locked position, both wheels spin together on each axle, regardless of the resistance they encounter. This system helps keep your truck moving over harsh terrain, and you won’t find it on any other truck in its class. All in all, the AT4X offers unparalleled performance over rough and uneven surfaces.

Explore the AT4 Trim In Person Today

At Meadowland GMC, we know what off-road adventurers want in a vehicle. We stock many AT4 trims in every GMC model at competitive prices. The AT4 trim provides enhanced off-road capability and signature style inside and out, so you’ll stand out wherever your adventure takes you.

We invite you to shop our virtual inventory to get a feel for the various models. When you find something you like, visit our Carmel showroom on Route 6. One of our friendly, knowledgeable staff will answer your questions and let you take your preferred model for a test drive.

Photo Credit: Image via OEM

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